So I tried this stuff today and I gotta tell ya, the red (actually barf) popped out like nothing. The stuff is the bomb. I've never seen a big difference between one red remover and the other but this one worked fast.
I have some experience using CTI's one part red remover. The first time I used it the spots came right out. No heat, no dwell time. I have used it about 4 times since with mixed results. I'm about 2 for 5 using it.
I've noticed that it almost always seems to work out that the first time I use any particular product, I always encounter that perfect environment for it to work amazingly well. Then, after I order a case of it, I run into those OTHER situations where it only works occasionally.
I have used Red One several times. On some stains the color would not come out completly even after repeated applicatons. I then had to use the two part stain remover. I prefer the two part. The one part is basically just ammonia and water.